Ah. It's reassuring to see the same subjects pop up again and again.
These are myths. It has been explained before.
This has to do with the momentum of old wives tales. Ma Lin often used a red H3 FH.
Most players who use DHS rubbers use black for FH. DHS sells many more black rubbers than red rubbers.
A rubber that was produced longer ago will not play as well as one produced more recently.
So, if a red H3 sits on a shelf for 4 years before it is bought and a black H3 sits on the shelf at the store for 3 months, and you buy both at the same time, the black one will definitely play better because in that 4 years sitting on the shelf, the red rubber will degrade.
But if both red and black came from the same batch, you would not be able to tell the difference.
Trouble is, they sell so many more black rubbers than red rubbers that the myth starts having some truth to it.
But if you got a red rubber fresh off the press and a black one that was sitting on a shelf for 4 years, the red one would play better.
Technology is good enough these days that they can make dyes that are the same or have whatever properties they want.
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